\section{GPL}
\input{gpl}

\section{Linux\copyright}
\input{linux}

\section{Quota}
\input{quota}

\section{Proxy}
\input{proxy}

\section{Squid}
\input{squid}

\section{ACL}
\input{acl}

\section{PostgreSQL}
\input{postgres}

\section{Python}
\input{python}

\section{Django}
\input{django}

\section{LDAP}
\input{ldap}

\section{Launchpad}
\input{launchpad}

\section{Expressões regulares}
\input{regular_expression}
